new file mode 100644
@@ -0,0 +1,122 @@
+From 4e2b52b5f7a3bf50a0f1494155717b02cc1df6d6 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Thu, 9 Mar 2023 16:22:11 +0100
+Subject: [PATCH] curl_path: create the new path with dynbuf
+
+CVE: CVE-2023-27534
+Upstream-Status: Backport [https://github.com/curl/curl/commit/4e2b52b5f7a3bf50a0f1494155717b02cc1df6d6]
+
+Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
+---
+ lib/curl_path.c | 71 ++++++++++++++++++++++++-------------------------
+ 1 file changed, 35 insertions(+), 36 deletions(-)
+
+diff --git a/lib/curl_path.c b/lib/curl_path.c
+index a1669d1..b9c470f 100644
+--- a/lib/curl_path.c
++++ b/lib/curl_path.c
+@@ -30,66 +30,65 @@
+ #include "escape.h"
+ #include "memdebug.h"
+
++#define MAX_SSHPATH_LEN 100000 /* arbitrary */
++
+ /* figure out the path to work with in this particular request */
+ CURLcode Curl_getworkingpath(struct Curl_easy *data,
+ char *homedir, /* when SFTP is used */
+ char **path) /* returns the allocated
+ real path to work with */
+ {
+- char *real_path = NULL;
+ char *working_path;
+ size_t working_path_len;
++ struct dynbuf npath;
+ CURLcode result =
+ Curl_urldecode(data->state.up.path, 0, &working_path,
+ &working_path_len, REJECT_ZERO);
+ if(result)
+ return result;
+
++ /* new path to switch to in case we need to */
++ Curl_dyn_init(&npath, MAX_SSHPATH_LEN);
++
+ /* Check for /~/, indicating relative to the user's home directory */
+- if(data->conn->handler->protocol & CURLPROTO_SCP) {
+- real_path = malloc(working_path_len + 1);
+- if(!real_path) {
++ if((data->conn->handler->protocol & CURLPROTO_SCP) &&
++ (working_path_len > 3) && (!memcmp(working_path, "/~/", 3))) {
++ /* It is referenced to the home directory, so strip the leading '/~/' */
++ if(Curl_dyn_addn(&npath, &working_path[3], working_path_len - 3)) {
+ free(working_path);
+ return CURLE_OUT_OF_MEMORY;
+ }
+- if((working_path_len > 3) && (!memcmp(working_path, "/~/", 3)))
+- /* It is referenced to the home directory, so strip the leading '/~/' */
+- memcpy(real_path, working_path + 3, working_path_len - 2);
+- else
+- memcpy(real_path, working_path, 1 + working_path_len);
+ }
+- else if(data->conn->handler->protocol & CURLPROTO_SFTP) {
+- if((working_path_len > 1) && (working_path[1] == '~')) {
+- size_t homelen = strlen(homedir);
+- real_path = malloc(homelen + working_path_len + 1);
+- if(!real_path) {
+- free(working_path);
+- return CURLE_OUT_OF_MEMORY;
+- }
+- /* It is referenced to the home directory, so strip the
+- leading '/' */
+- memcpy(real_path, homedir, homelen);
+- real_path[homelen] = '/';
+- real_path[homelen + 1] = '\0';
+- if(working_path_len > 3) {
+- memcpy(real_path + homelen + 1, working_path + 3,
+- 1 + working_path_len -3);
+- }
++ else if((data->conn->handler->protocol & CURLPROTO_SFTP) &&
++ (working_path_len > 2) && !memcmp(working_path, "/~/", 3)) {
++ size_t len;
++ const char *p;
++ int copyfrom = 3;
++ if(Curl_dyn_add(&npath, homedir)) {
++ free(working_path);
++ return CURLE_OUT_OF_MEMORY;
+ }
+- else {
+- real_path = malloc(working_path_len + 1);
+- if(!real_path) {
+- free(working_path);
+- return CURLE_OUT_OF_MEMORY;
+- }
+- memcpy(real_path, working_path, 1 + working_path_len);
++ /* Copy a separating '/' if homedir does not end with one */
++ len = Curl_dyn_len(&npath);
++ p = Curl_dyn_ptr(&npath);
++ if(len && (p[len-1] != '/'))
++ copyfrom = 2;
++
++ if(Curl_dyn_addn(&npath,
++ &working_path[copyfrom], working_path_len - copyfrom)) {
++ free(working_path);
++ return CURLE_OUT_OF_MEMORY;
+ }
+ }
+
+- free(working_path);
++ if(Curl_dyn_len(&npath)) {
++ free(working_path);
+
+- /* store the pointer for the caller to receive */
+- *path = real_path;
++ /* store the pointer for the caller to receive */
++ *path = Curl_dyn_ptr(&npath);
++ }
++ else
++ *path = working_path;
+
+ return CURLE_OK;
+ }
+--
+2.25.1
+
@@ -41,6 +41,7 @@ SRC_URI = "https://curl.se/download/${BP}.tar.xz \
file://CVE-2023-23914_5-5.patch \
file://CVE-2023-23916.patch \
file://CVE-2023-27533.patch \
+ file://CVE-2023-27534.patch \
"
SRC_URI[sha256sum] = "0aaa12d7bd04b0966254f2703ce80dd5c38dbbd76af0297d3d690cdce58a583c"